timed auto logout and browser close

Question

I\'ve created a very simple multiuser game for learning purposes.

As users log on, each other user gets an update of all currently logged in users.

When a us

Answer 1

Instead of just setting a flag when a user logs in, log a timestamp you can use to determine the time of log-in. Also, you can have your client, call-home using AJAX some PHP script to save in the database the timestamp of last user-activity.

You can then execute a session cleaner script periodically using a cron job in the server. The script would query the database to detect the stale sessions and do the log-off (set the logged on flag to 0). If the server has PHP CLI (Command Line Interface) installed, you can code the script in PHP.